Evaluate the integral: ∫2x sin(x2 + 1) dx – InterviewSolution

1.

Evaluate the integral: ∫2x sin(x2 + 1) dx

Answer»

Take x² + 1 = t

So we get

2x dx = dt

By integrating w.r.t. t

∫sin t dt = – cos t + c

By substituting the value of t

= – cos (x² + 1) + c

Discussion

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